Building Permits in New Haven
Find permit requirements, fees, and application steps for all common building projects in New Haven, CT. Source-cited from official city building code.
Most home improvement projects in New Haven require a building permit. Select a permit type below to see whether a permit is required, what the fees are, and how to apply through the New Haven Building Department.
Permit Types
Fence Permit
Requirements →
Shed Permit
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Deck Permit
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Pool Permit
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Addition Permit
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ADU Permit
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Demolition Permit
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Electrical Permit
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Plumbing Permit
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Roofing Permit
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HVAC Permit
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Solar Permit
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New Haven Building Department
About New Haven Building Permits
Building permits ensure that construction work in New Haven meets local safety codes and zoning requirements. Unpermitted work can result in fines, required demolition, and complications when selling your home. Always confirm permit requirements with the New Haven Building Department before starting any project.
Source: New Haven Zoning Ordinance; Connecticut Public Act 21-29 (2021). Last verified April 6, 2026. View source